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Authors
Rueskov, Vivian
Korshøj, Mette
Hansen, Claus D.
Mortensen, Ole Steen
Labriola, Merete
Lund, Thomas
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Funding
Funding for this research was provided by:
Holbaek Hospital Research Hub
The Health Research Fund Region Zealand (R41-A1825)
Danske Regioners Forebyggelsesfond (R260-A6030)
Zealand Region
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Article History
Received: 9 July 2025
Accepted: 8 December 2025
First Online: 16 January 2026
Declarations
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: The FOCA cohort was approved by the Danish Data Protection Agency (no. 1-16-02-461-16), according to the Danish law for studies using questionnaire and register data (Act on Processing of Personal Data—Act No. 429 of 31 May 2000).
: In 2017, it was standard practice that completion of a voluntary questionnaire constituted implied consent. Accordingly, explicit parental consent was not obtained; the school assumed responsibility for student participation.
: Not required.
: The authors declare no conflicts of interest related to this study.
